MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating it likely exploits a vulnerability or hosts malicious content. The heuristics reveal it functions as a link farm, containing numerous external URIs pointing to various domains, suggesting a potential phishing or SEO spam campaign. The presence of multiple external links, some on disposable hosting, reinforces the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://nipisod.ru/wix?keyword=two+kinds+questions+and+answers PDF link annotation
- https://cdn.sqhk.co/guzupewad/jaLhjgd/3717460592.pdfIn PDF document text
- https://jirogadipew.weebly.com/uploads/1/3/1/6/131606393/duzabekixidi-moxebiwomaxo-joxigilu.pdfIn PDF document text
- https://cdn.sqhk.co/votezevon/ejihdyU/sepiruvenirebesu.pdfIn PDF document text
- https://xuxurebero.weebly.com/uploads/1/3/4/6/134673100/111546.pdfIn PDF document text
- https://cdn.sqhk.co/lunosupi/bjahaha/52564492951.pdfIn PDF document text
- https://cdn.sqhk.co/bubuzibiv/bjgie9N/wolasabubeveputof.pdfIn PDF document text
- https://cdn.sqhk.co/xewimoziwuvo/5jeM6EQ/10018638571.pdfIn PDF document text
- https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/nuwomu.pdfIn PDF document text
- https://bavalezamo.weebly.com/uploads/1/3/4/7/134749705/dajowozipelik-xipip-zobigo.pdfIn PDF document text
- https://cdn.sqhk.co/mujawiru/VaWhgie/fifuzasajipanubodomu.pdfIn PDF document text
- https://cdn.sqhk.co/vujenibolo/KhfYPic/usa_flag_shirt_button.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/b6921e92-6f64-4023-adae-88eb2dcc1248/how_do_i_change_my_braun_thermoscan_from_f_to_c.pdfIn PDF document text
- https://502f924d-676a-41b3-8220-87c01882f600.filesusr.com/ugd/5a20bb_f7f7dd35cbd946e5bd198e6b435d5358.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/b415eb94-4fd0-45d6-a174-da91c1e263a1/american_politics_today_6th_edition_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6bf6426e-7fea-4b9c-b165-13e7dffc4913/xipinizawipepikipisi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/22760eaa-0f67-43b7-af57-121db1f73687/historia_y_evolucion_de_los_derechos_humanos_en_mexico.pdfIn PDF document text
- https://34e51215-b586-4e01-b3ea-a219475a7b91.filesusr.com/ugd/46481b_b8ebfb4be3544bf3a3a9b32488d021f0.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/55cbce87-e722-4999-b292-c45a084a3cf1/handy_stitch_instructions.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e9a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9A5 | 4900 bytes |
SHA-256: a5a235c1375e074243fb6295ae0947e90c2a850c4a95d5b8b155324fe3934526 |
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font_01_sfnt_off0000fa67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA67 | 10072 bytes |
SHA-256: 189dce52e569a736bebb86d4cbeedebf0200129c5f140206d5bde74b72050ac2 |
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font_02_sfnt_off00011cd0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11CD0 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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